-`numcacheslots` - Number of unique associated cache slots for this barcode (Relevant feature for doublet detection, [see below for more](#doublet))
The summary contains metrics relevant to the mappability of fragments from each barcode.
However, it also contains metrics (`estfrip` and `numcacheslots`) relevant to quality control for chromatin profiling assays like ATAC-seq, CHIP-seq and Hi-C data.
However, it also contains metrics (`estfrip` and `numcacheslots`) relevant to quality control for chromatin profiling assays like scATAC-seq. These cache-related metrics require overall deep sequencing depth, so it is more useful for single-cell data.
The next two sections briefly describe these two metrics and how they can be useful for users.
